JP5595129B2 - Electric lock - Google Patents

Description

  The present invention relates to an electric lock.

  An electric lock described in Patent Document 1 is known as an electric lock that can be manually operated by cutting a power transmission path with an actuator when an operation failure occurs due to an actuator failure, power failure, or the like. In this conventional example, the electric lock is disposed at the final stage of the gear transmission means that is rotationally driven by the drive motor. A pin that can be locked to the claw is provided upright, and has a drive arm whose other end is rotatably supported by the dharma and a dead bolt that is locked and unlocked by the rotation of the dharma.

  A clutch plate having a guide portion at both ends and formed in an anchor shape is attached to the clutch gear so as to be free to rotate while being urged toward a predetermined neutral position.

  When the clutch gear is rotationally driven by the drive motor, the drive arm is driven by the pin being pushed by the locking claw, and the dead bolt is operated.

  When the drive motor stops during the locking / unlocking operation, the clutch plate is rotationally driven toward the neutral position by the urging force, and accordingly, the pin is pushed by the guide portion and the drive arm swings. As the drive arm swings, the pin moves to a position that deviates from the orbit of the pawl, and thereafter, the pin is released from the clutch gear that receives the rotational resistance from the drive motor, and the input on the drive arm side, That is, a manual locking operation is possible.

JP 2007-100373 A

  However, in the above-described conventional example, if the setting of the return force to the neutral position of the clutch plate that operates as a pin path changing member is inappropriate, for example, the clutch from the state shown in FIG. If the return force is larger than the set value when the gear is driven to rotate, drive the pin to a position that deviates from the orbit of the locking claw, making it difficult to drive with the locking claw, or set value If it is smaller, the manual operation cannot be switched after stopping, or the clutch plate is idled with respect to the clutch gear by the pin during manual operation, and the given operation cannot be performed. There is a risk of problems.

On the other hand, the clutch plate return mechanism includes a sliding piece housed in a housing portion formed on the clutch plate and a small surface cam surface formed on a cylindrical central shaft portion formed at the center portion of the clutch gear. The structure is complicated and the return force is difficult to manage.
The present invention has been made to eliminate the above drawbacks, and an object thereof is to provide an electric lock having a simple structure and high operation reliability.

  The electric lock is configured to drive the dead bolt 3 manually and by a rotation operation to the rotary cam 2 by the motor 1, and includes a drive gear 6, a relay body 8, and a holding portion 9. As a manual operation means, a thumb turn or a cylinder lock operated by an unlocking key can be used, and driving by the motor 1 is performed by reducing the rotational power of the motor 1 by an appropriate reduction gear train.

  The drive gear 6 has a locking drive unit 4 and an unlocking drive unit 5 on the side wall surface, and is reciprocated between the neutral position and the unlocking position by the motor 1. The neutral position is set to an intermediate position of all the strokes of the drive gear 6, and one stroke end is set to the locked position and the opposite end is set to the unlocked position across the neutral position.

The locking / unlocking drive units 4 and 5 are provided in a position range that is shifted by a predetermined interval in a direction orthogonal to the driving direction of the driving gear 6, and are moved in parallel with the driving of the driving gear 6 (the locking driving unit 4. And the electric path and the manual path by the unlocking drive unit 5).

  The drive gear 6 is driven back and forth between the neutral position and one of the unlocked positions. For example, when the user selects the locking operation, the drive gear 6 has moved from the neutral position to the locked position. After that, it returns to the neutral position again. The drive gear 6 may be rotationally driven, or may be formed in a rack 14 shape and driven in translation.

  The relay body 8 is driven by the drive gear 6 to move between the locking / unlocking positions, and rotates the rotating cam 2 to the locking / unlocking position. The relay body 8 is provided with a driven portion 7, and the relay body 8 is driven by the locking / unlocking drive portion 5 of the drive gear 6 pushing the driven portion 7. The driven part 7 is swingable between the electric path and the manual path, and is biased to the manual path side by an appropriate biasing means, and the holding part 9 is when the relay body 8 is in the unlocked position. Hold on the electric path against urging force.

  Regardless of whether the relay body 8 is in the unlocked or unlocked position, the drive unit for unlocking the opposite position or moving the driven unit 7 in the locked position to the unlocked position is from the current position of the driven unit 7. Since it is away, there is no obstacle when moving the driven part 7, and manual operation in the direction is allowed.

  In the unlocked state, when the motor 1 is driven to lock, the locking drive unit 4 moving on the electric path pushes the driven unit 7 held by the holding unit 9 to move to the locking position. The locking drive unit 4 has a locking function with respect to the driven unit 7, and the driven unit 7 is locked to the locking driving unit 4 in the forward path of the driving gear 6 and transferred to the locking position. With the start of movement to the neutral position, the lock is released and the manual path is entered.

  Even if the driving of the motor 1 is stopped during the locking operation, once the relay body 8 is manually moved in the locking direction, the locking of the driven portion 7 with the locking driving portion 4 is released and the manual operation is stopped. Move to the route. Therefore, the manual unlocking operation is always guaranteed, and the user can be surely prevented from being locked out.

On the other hand, when the relay body 8 is in the locked position, the driven portion 7 is moved to the manual path by the action of the urging force, and when the manual unlocking operation is guaranteed and the motor 1 is driven. , the driven portion 7 is transferred to the unlocking position side moves to an unlocking position of the unlocking drive unit 5.

The driven portion 7 that has moved to the unlocking position side is moved to an electric path by an appropriate means, for example, using a cam formed in the unlocking drive portion 5 and is held by the holding portion 9.

  Therefore, in the present invention, the driven portion 7 is provided in the relay body 8, and the path is switched by the urging means mounted on the relay body 8. Therefore, the structure is simple and high operational reliability is ensured. be able to.

  According to the present invention, an electric lock having a simple structure and high operation reliability can be obtained.

It is a figure which shows this invention, (a) is a figure which shows a locked state, (b) is a figure which shows an unlocked state. FIG. 2 is an exploded perspective view of FIG. 1. FIG. 2 is an exploded perspective view of FIG. 1. It is a top view which shows a clutch part. It is a figure which shows the structure of a clutch part, (a) is a top view of the disassembled state, (b) is a 5B direction arrow directional view of (a). It is a figure which shows a relay body, (a) is a top view of the disassembled state, (b) is a 4B direction arrow view of (a), (c) is a top view which shows an assembly state. It is a figure which shows operation | movement of a clutch part, (a) is a figure which shows a slide base part, (b) is a figure which shows a drive gear, (c) is a figure which shows a terminal plate. It is a figure which shows the locking operation by a motor, (a) is a figure which shows the state of a clutch part, (b) is a figure which shows a slide base part, (c) is a figure which shows a drive gear. It is a figure which shows a locking operation completion state, (a) is a figure corresponding to Fig.8 (a), (b) is a figure corresponding to FIG.8 (b), (c) is a figure corresponding to FIG.8 (c). It is. FIG. 7 is a diagram illustrating an unlocking operation by a motor, (a) is a diagram illustrating a drive gear in a locked state, (b) is a diagram illustrating a state in which a driven part is moved to an electric path, and (c) is an unlocking operation by a drive gear The figure which shows the state driven to the position, (d) is a figure which shows the slide base part in an unlocking position. It is a figure which shows operation when a motor stops in the middle of the locking operation by a motor, (a) is a figure which shows the drive gear at the time of a stop, (b) is a figure which shows a slide base part, (c) starts manual operation The figure which shows the drive gear at the time of doing, (d) is a figure which shows the slide base part at that time. It is a figure which shows operation when a motor stops in the middle of the unlocking operation by a motor, (a) is a figure which shows the drive gear at that time, (b) is a figure which shows a slide base part.

  As shown in FIGS. 1, 2, and 3, the electric lock is driven by a motor 1, a drive gear 6 driven by the motor 1, a relay body 8 driven by the drive gear 6, and a relay body 8 in the lock case 16. A rotating cam 2 and a dead bolt 3 that is locked and unlocked by the rotating cam 2.

  An appropriate reduction gear train including a worm 17a and a worm wheel 17b fixed to the rotating shaft of the motor 1 is interposed between the motor 1 and the drive gear 6. The power of the motor 1 is transmitted by the reduction gear train. It is decelerated and transmitted to the drive gear 6. The motor 1 is driven as a set of reverse rotation following rotation in a direction predetermined by the user's locking / unlocking command type. For example, the motor 1 rotates counterclockwise after predetermined rotation in the clockwise direction in response to one locking command. In response to one unlocking command, first, the forward rotation is driven in the counterclockwise direction, and then the backward driving in the clockwise direction is continued to complete the processing.

  The power transmitted to the drive gear 6 is transmitted to the relay body 8 via a clutch part described later. The relay body 8 is guided and translated by a slide base portion 19 formed on the gear cover 18 and a slide guide 15 using the side wall of the lock case 16. The driving gear 6 is driven to reciprocate a predetermined angle with respect to one locking / unlocking command as the motor 1 is driven, whereas the relay body 8 moves between the locking / unlocking positions set as stroke end positions by one locking / unlocking command. Moving. FIG. 1 shows a driving state of the relay body 8, FIG. 1 (a) shows a state where the relay body 8 is driven to a locking position set in the upper part of FIG. The state where the motor 1 and the drive gear 6 are reciprocated according to the unlocking command and driven from the locking position to the unlocking position which is the lower end is stopped.

  A rack 14 is fixed to one end of the relay body 8 and meshes with a pinion 13 formed on the rotating cam 2 to rotate the rotating cam 2. The rotating cam 2 has a dead drive arm 2a, and rotates between the locking and unlocking positions to drive the dead bolt 3. As shown in FIG. 1 (a), the dead bolt 3 reciprocates between a locking position where one end protrudes from the lock case 16 and an unlocking position shown in FIG. 1 (b). When the rotary cam 2 is rotationally driven in the unlocking direction (clockwise) in the locked state, the unlocking projection 3a formed on the dead bolt 3 is pushed backward to shift to the unlocked state of FIG. When the rotary cam 2 is driven to rotate counterclockwise from the unlocked state of FIG. 1B, the dead drive arm 2a pushes the locking projection 3b of the dead bolt 3 forward, so that the locked state is reached. Transition.

  The rotary cam 2 can be operated by manual operating means (not shown) such as a cylinder lock arranged on the outdoor wall surface of the door or a thumb turn device arranged on the indoor side wall surface. A connection hole 2b for connecting the drive shaft of the operation means is opened in the center of rotation.

  The clutch unit separates the manual operation system from the drive system of the motor 1 during manual operation by the manual operation means during normal operation, or during an emergency manual operation when the motor 1 is stopped during driving using the motor 1. As shown in FIGS. 4 and 5, the drive gear 6, the slide base portion 19, and the relay body 8 are used.

  As described above, the drive gear 6 is rotationally driven by a predetermined operating angle by the reduction gear train, and one end of the rotation range (in the present embodiment, the counterclockwise end in FIG. 4) is the locked position and the opposite end. Is set to the unlock position, and the stroke center position is set to the initial position. The drive gear 6 is driven to one of the locking and unlocking positions commanded from the initial position as the starting point and then returned to the initial position as one operation. The relay body 8 is driven from either one of the locking and unlocking positions to the opposite position, and as a result, the locking and unlocking state reversal operation of the rotating cam 2 and the dead bolt 3 is set.

  The side wall surface of the drive gear 6 is provided with a housing recess 12 that is long in the circumferential direction and whose inner and outer peripheral walls are formed by concentric circles with respect to the rotation shaft 6 a of the drive gear 6. The unlocking drive unit 5 is formed using the counterclockwise end wall of the housing recess 12, and the locking drive unit 4 protrudes at an intermediate position of the outer peripheral wall.

  On the other hand, a swing lever 11 having a pin-like driven portion 7 is connected to one end of the relay body 8 so as to be swingable. As shown in FIG. 6, a compression spring 20 is interposed between the swing lever 11 and the relay body 8, and is urged in a direction that enlarges the crossing angle of both. In order to prevent the compression spring 20 from being detached, a spring receiving projection 21 is provided on the wall surface facing the swinging direction of the swing lever 11 and the relay body 8.

  As shown in FIG. 5, the relay body 8 is mounted with the connecting end of the swing lever 11 placed on the slide base portion 19, and the driven portion 7 is a guide opening established in the slide base portion 19. 19 a, passes through the insertion hole 22 a of the terminal plate 22 rotatable around the rotation shaft 6 a of the drive gear 6 and the terminal board 23 fixed to the lock case 16, and reaches the receiving recess 12 of the drive gear 6.

In the mounted state of the relay body 8, the driven portion 7 is urged by the compression spring 20 toward the inner peripheral wall surface of the housing recess 12, and the locking drive portion 4 and the unlocking drive portion 5 resist the urging force described above. Thus, it is formed in a concave shape that can lock the driven portion 7 and restrict movement in the urging direction. The driven portion 7, an electric path which moves along the outer peripheral wall of the accommodating recess 12 is engaged with the lock driver section 4,5, the engagement between the lock driver section 4,5 is released, housing Any of the manual paths moving along the inner peripheral wall of the recess 12 can be moved, and at least the driven path is secured between the locking drive unit 4 and the inner peripheral wall of the housing recess 12 to secure the manual path. A gap through which the portion 7 can be inserted is provided.

  The guide opening 19a is formed in a size that does not hinder the movement of the driven portion 7 during the locking / unlocking operation, and the driven portion 7 is located at the lower end when the relay body 8 is in the unlocking position. The holding portion 9 that holds the electric path against the urging force is formed to have a concave shape directed toward the locking position.

  On the other hand, the insertion hole 22a of the terminal plate 22 is formed in a shape extending radially from the center in order to allow movement of the driven portion 7 between the manual path and the electric path. Is rotated.

  Further, a common terminal 22 b is formed on the surface of the terminal plate 22 facing the terminal substrate 23, and a selection terminal 23 a is formed on the terminal substrate 23. When the relay body 8 reaches the locking / unlocking position, the common terminal 22b generates a locking / unlocking operation end signal by short-circuiting the selection terminals 23a, and after the rotation of the motor 1 is stopped together with the output of the locking / unlocking operation end signal, The drive gear 6 is driven in reverse until it reaches the initial position. The initial position is detected by detecting the rotational position of the drive gear 6 using a switch (not shown).

  As described above, when the rotation angle of the driving gear 6 is used by detecting the locking / unlocking position by converting the translational movement of the relay body 8 into the rotation angle of the terminal plate 22 via the driven portion 7. In addition to the high detection accuracy, the structure can be simplified.

  The operation of the clutch portion is shown below in FIG. First, in the unlocked state, the relay body 8 is located at the unlocked position at the lower end in FIG. 7, and as shown in FIG. 7A, the driven portion 7 is fitted into the holding portion 9 of the guide opening 19a. And are held on the electric path. Moreover, as shown in FIG.7 (b), the locking drive part 4 of the drive gear 6 is located in the clockwise direction from the position of the driven part 7 in the unlocking position.

  When the locking operation using the motor 1 is started from this state, the drive gear 6 rotates counterclockwise in the forward path to pick up the driven part 7 on the electric path, as shown in FIG. Move to the locked position. As described above, the locking drive unit 4 can hold the driven unit 7 against the urging force applied to the swing lever 11 and hold it on the electric path. By driving to the locked position, the relay body 8 moves to the locked position as shown in FIG. 8A, and the dead bolt 3 shifts to the locked state (see FIG. 1B).

  Thereafter, when the drive gear 6 is driven to return to the initial position in the return path, the lock drive unit rotates clockwise, and the locking of the driven unit 7 with the lock drive unit 4 is released. As the driven portion 7 is unlocked, the driven portion 7 moves to the manual path by the urging force, and the operation ends (see FIG. 9).

As shown in FIG. 9 (c), the driven portion 7 comes into contact with the cam surface 10 of the unlocking driving portion 5 formed on the locking position side end wall surface of the receiving recess 12 at the locking position. When the unlocking operation using the motor 1 is started from this state, as shown in FIG. 10A, the cam surface 10 moves the driven portion 7 to the electric path side against the urging force of the swing lever 11. 10 (b), as shown in FIG. 10 (b), after the movement of the swing lever 11 to the manual path side is restricted and absorbed in the unlocking drive unit 5, the electric path on the electric path is shown in FIG. After being moved to the unlocking position shown in (d), the drive gear 6 returns to the initial position and shifts to the unlocking state shown in FIG.

  On the other hand, as shown in FIG. 7 and FIG. 9, in any position of locking and unlocking, the opposite direction, that is, the locking direction in the unlocked state (upward in FIG. 7), or the unlocking direction in the locked state (FIG. 9). The manual path is opened downward), and when only the driven part 7 is moved in the opposite direction by a manual operation, that is, without rotating the driving gear 6, the driven part 7 is moved to the swing lever 11. In order to move to the manual path by the urging force, the locking / unlocking operation using the manual operation means is always guaranteed.

  Also, as shown in FIGS. 11A and 11B, when the motor 1 stops during the locking operation using the motor 1, as shown in FIGS. 11C and 11D, the manual operation is temporarily performed. When the rotating cam 2 is rotated by the operation and the relay body 8 is slightly moved to the locking position side, the driven portion 7 is moved to the locking position side and the locking with the locking driving portion 4 is released. As a result, the driven portion 7 moves to the manual route, and thereafter, the unlocking operation can be performed using the manual operation means.

  Furthermore, as shown in FIG. 12, even when the motor 1 is stopped during the unlocking operation using the motor 1, the manual operation means is used because the manual path is open to the unlocking position side. Thus, the unlocking operation can be completed.

  As a result, even when the use of the motor 1 is disabled due to the occurrence of a malfunction or the like, the unlocking operation is ensured, so that the lockout from the room can be reliably prevented.

DESCRIPTION OF SYMBOLS 1 Motor 2 Rotating cam 3 Dead bolt 4 Locking drive part 5 Unlocking drive part 6 Drive gear 7 Driven part 8 Relay body 9 Holding part 10 Cam surface 11 Swing lever 12 Accommodation recessed part 13 Pinion 14 Rack 15 Guide

Claims (5)

An electric lock that drives a dead bolt by a manual and rotational operation to a rotating cam by a motor,
Locking drive unit on the side wall surface, and an unlocking drive unit arranged over a range from the electric path along which the locking drive unit moves to the manual path parallel to the electric path , driven by the motor, and the type of unlocking operation And a drive gear that is driven back and forth in the opposite direction from the initial position,
A relay body that can be moved by swinging between both paths, includes a driven portion biased toward the manual path, moves between the locking and unlocking positions, and operates the rotating cam;
A holding part that holds the driven part on the electric path against the biasing force in the unlocked position;
The locking drive unit is formed so as to be able to move to the locking position by locking the driven unit held by the holding unit in the outward path of the locking operation against the urging force,
The unlocking drive unit is an electric lock formed so that the driven unit can be transferred to the holding unit in the outward path of the unlocking operation. 2. The electric device according to claim 1, wherein the driven part is formed in a pin shape, and the unlocking drive part includes a cam surface that picks up the driven part on the manual path and moves it to the electric path in the unlocking operation. Tablets.   3. The electric lock according to claim 1, wherein the driven portion is fixed to a swing lever that is pivotally supported at one end of the relay body. The side wall surface of the drive gear is formed with a housing recess that is long in the stroke direction in which the driven portion is fitted, and one stroke terminal wall surface of the housing recess is used as the unlocking drive portion,
And the locking drive part is formed by bulging one long side part intermediate part of the accommodation recessed part toward the opposing long side part leaving a passing space of the driven part between the opposing long side part. Item 4. The electric lock according to item 1, 2 or 3.   5. The electric lock according to claim 1, wherein the relay body is provided with a rack that meshes with a pinion provided on a rotating cam at one end and is driven to translate along an appropriate guide.

Images